This code defines a function called `AddTask` that adds a...

This code defines a function called AddTask that adds a task to a thread pool. The function takes an argument task which is a callable object (e.g., a lambda function or a functor).

The code first creates a std::lock_guard object with the thread pool's mtx mutex, which ensures exclusive access to the shared state of the thread pool. Then the emplace() method is called on the tasks member of the thread pool to add the task to the queue of tasks.

Finally, the function calls notify_one() on the thread pool's cond condition variable to signal to one of the waiting threads that a new task is available. This will wake up one of the worker threads in the pool, allowing it to pick up and execute the new task.